The two main factors contributing to a material's radiopacity are density and atomic number.

Micronized tantalum powder is added in order to maintain Radiopacity.

The one on the right had a slight angle to it two-thirds along its length, associated with a slight increase in radiopacity.

The lesion appears as a radiopacity in the periapical area hence the sclerotic reaction.

"Type 2" lesions are characterized by a generalized loss of root radiopacity on a dental radiograph.

Radiodensity (or radiopacity) refers to the relative inability of electromagnetic radiation, particularly X-rays, to pass through a particular material.

Radiopacity is one of the key considerations in the design of various devices such as guidewires or stents that are used during radiological intervention.

The radiopacity of a given endovascular device is important since it allows the device to be tracked during the interventional procedure.

In the days when many GICs were radiolucent, the addition of silver conferred radiopacity without which it would be difficult or impossible to diagnose secondary caries.

Originally, MTA was formulated from commercial Portland cement combined with bismuth oxide powder for radiopacity , to make the material visible on a dental x-ray.

When testing a new medical device for regulatory submission, device manufacturers will usually evaluate the radiocontrast according to ASTM F640 "Standard Test Methods for Determining Radiopacity for Medical Use."